不同连接方式下直流场回路支柱绝缘子抗震性能研究
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摘要
为对比全硬管母连接和分段管母组合六分裂导线连接两种连接方式对直流场回路抗震性能的影响,以某换流站直流场±400 kV回路为研究对象,建立了不同连接条件下该回路的精细化有限元模型,获得了回路支柱绝缘子的地震响应。对不同条件下回路中支柱绝缘子的地震响应进行了对比分析,发现绝缘子的位置和回路的连接方式对绝缘子地震响应有较大影响。进一步得到如下结论:该回路在地震作用下易发生整体扭转,回路两端绝缘子地震响应较中间绝缘子大;全硬管母连接方式下回路整体性好,地震响应可以较好的均分给各个支柱绝缘子,分段管母加六分裂导线连接的回路整体性略差,平行弱轴的回路部分中设备的地震响应有明显增大;非直线布置耦联体系中平行弱轴的回路部分中设备的地震响应较大。
To compare the influences of two connection modes on the seismic performance of the loop in DC field,a ±400 kV loop in a DC field in a converter substation is taken as the objective to establish a refined finite element model for analyzing its seismic performance. The seismic responses of the loop under different input ground motions are obtained. It is found that the location of insulator and the connection mode of loop have great influences on the seismic response of the insulators.It is concluded that the loop has an overall torsional effect under seismic action,and the dynamic responses of the insulators at both ends are larger. The integrity of the loop connecting with rigid tubular bus is better. The seismic response of the loop in rigid connection mode is more evenly distributed to each insulator than that inflexible connection mode. The integrity of the loop connecting with rigid tubular bus and 6-bundle conductors is poor. The seismic response of the equipment in the loop parallel to the weak axis increases obviously.And for nonlinear arrangement, the seismic response of the equipment in the loop parallel to the weak axis is greater.
To compare the influences of two connection modes on the seismic performance of the loop in DC field,a ±400 kV loop in a DC field in a converter substation is taken as the objective to establish a refined finite element model for analyzing its seismic performance. The seismic responses of the loop under different input ground motions are obtained. It is found that the location of insulator and the connection mode of loop have great influences on the seismic response of the insulators.It is concluded that the loop has an overall torsional effect under seismic action,and the dynamic responses of the insulators at both ends are larger. The integrity of the loop connecting with rigid tubular bus is better. The seismic response of the loop in rigid connection mode is more evenly distributed to each insulator than that inflexible connection mode. The integrity of the loop connecting with rigid tubular bus and 6-bundle conductors is poor. The seismic response of the equipment in the loop parallel to the weak axis increases obviously.And for nonlinear arrangement, the seismic response of the equipment in the loop parallel to the weak axis is greater.
引文
[1]程永锋,朱全军,卢智成.变电站电力设施抗震措施研究现状与发展趋势[J].电网技术,2008,32(22):84-89.CHENG Yongfeng,ZHU Quanjun,LU Zhicheng.Progress and development trend on seismic measures of electric power equipments in transformer substation[J].Power System Technology,2008,32(22):84-89.
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[8]IEEE recommended practice for the design of flexible buswork located in seismically active areas:IEEE Std 1527-2006[S].2006.
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[12]ARMEN D K,SACKMAN J L,HONG K J.Interaction in Interconnected electrical substation equipment subjected to earthquake ground motions[R].California:University of California,1999.
[13]GHALIBAFIAN H,BHUYAN G S,VENTURA C,et al.Seismic behavior of flexible conductors connecting substation equipment-Part II:Shake table tests[J].IEEE Transactions on Power Delivery,2004,19(4):1680-1687.
[14]谢强,王亚非,魏思航.软母线连接的变电站开关设备地震破坏原因分析[J].电力建设,2009,30(4):10-14.XIE Qiang,WANG Yafei,WEI Sihang.Cause analysis of damage of flexible-busbar-connected switchgears under earthquake[J].Electric Power Construction,2009,30(4):10-14.
[15]程永锋,邱宁,卢智成,等.硬管母线连接的1 000 kV避雷器和电容电压式互感器抗震性能振动台试验[J].高电压技术,2014,40(12):3882-3887.CHENG Yongfeng,QIU Ning,LU Zhicheng,et al.Shake table test on seismic performance of 1000 kV arrester and capacitor voltage transformer interconnected by tube bus[J].High Voltage Engineering,2014,40(12):3882-3887.
[16]张雪松,卢智成.软母线连接特高压电气设备的地震耦合效应[J].华南理工大学学报(自然科学版),2016,44(8):74-81.ZHANG Xuesong,LU Zhicheng.Seismic coupling effect of uhv electrical equipment with flexible bus connection[J].Journal of South China University of Technology(Natural Science Edition),2016,44(8):74-81.
[17]晏致涛,黄静文,李正良.基于结点6自由度的分裂导线有限元模型[J].工程力学,2012,29(8):325-332.YAN Zhitao,HUANG Jingwen,LI Zhengliang.Finite element model of bundle lines based on 6-dof node[J].Engineering Mechanics,2012,29(8):325-332.
[18]IEEE recommended practice for seismic design of substations:IEEE Std 693-2005[S].2016.
[19]建筑抗震设计规范:GB 50011-2010[S].2010.Code for seismic design of buildings:GB 50011-2010[S].2010.
[20]电力设施抗震设计规范:GB 50260-2013[S].2013.Code for design of seismic of electrical installtions:CB50260-2013[S].2013.
[2]文波,牛荻涛,赵鹏.变电站抗震性能研究综述[J].工程抗震与加固改造,2007,29(6):73-77.WEN Bo,NIU Ditao,ZHAO Peng.Review of substation seismic performance research[J].Earthquake Resistant Engineering and Retrofitting,2007,29(6):73-77.
[3]谢强,李杰.电力系统自然灾害的现状与对策[J].自然灾害学报,2006,15(4):126-131.XIE Qiang,LI Jie.Current situation of natural disaster in electric power system and counter measures[J].Journal of Natural Disasters,2006,15(4):126-131.
[4]SCHIFF A J.Guide to improved earthquake performance of electrical power systems[M].Washington DC:National Institute for Standards and Testing,1998.
[5]谢强.电力系统的地震灾害研究现状与应急响应[J].电力建设,2008,29(8):1-6.XIE Qiang.State-of-the-art of seismic disaster research and emergency response of electric power system[J].Electric Power Construction,2008,29(8):1-6.
[6]于永清,李光范,李鹏,等.四川电网汶川地震电力设施受灾调研分析[J].电网技术,2008,32(11):5-10.YU Yongqing,LI Guangfan,LI Peng,et al.Investigation and analysis of electric equipment damage in sichuan power grid caused by earthquake[J].Power System Technology,2008,32(11):5-10.
[7]胡彧婧,谢强.管母线连接变电站电气设备的地震易损性分析[J].电力建设,2010,31(7):22-28.HU Yujing,XIE Qiang.Seismic vulnerability of substation equipments interconnected by rigid bus[J].Electric Power Construction,2010,31(7):22-28.
[8]IEEE recommended practice for the design of flexible buswork located in seismically active areas:IEEE Std 1527-2006[S].2006.
[9]DASTOUS J B,PIERRE J R.Design methodology for flexible buswork between substation equipment subjected to earthquakes[J].IEEE Transactions on Power Delivery,2007,22(3):1490-1497.
[10]FILIATRAULT A,STEARNS C.Electrical substation equipment interaction:Experimental flexible conductor studies[R].California:University of California,2003.
[11]SONG J,KIUREGHIAN A D,SACKMAN J L.Seismic interaction in electrical substation equipment connected by non-linear rigid bus conductors[J].Earthquake Engineering and Structural Dynamics,2007(36):167-190.
[12]ARMEN D K,SACKMAN J L,HONG K J.Interaction in Interconnected electrical substation equipment subjected to earthquake ground motions[R].California:University of California,1999.
[13]GHALIBAFIAN H,BHUYAN G S,VENTURA C,et al.Seismic behavior of flexible conductors connecting substation equipment-Part II:Shake table tests[J].IEEE Transactions on Power Delivery,2004,19(4):1680-1687.
[14]谢强,王亚非,魏思航.软母线连接的变电站开关设备地震破坏原因分析[J].电力建设,2009,30(4):10-14.XIE Qiang,WANG Yafei,WEI Sihang.Cause analysis of damage of flexible-busbar-connected switchgears under earthquake[J].Electric Power Construction,2009,30(4):10-14.
[15]程永锋,邱宁,卢智成,等.硬管母线连接的1 000 kV避雷器和电容电压式互感器抗震性能振动台试验[J].高电压技术,2014,40(12):3882-3887.CHENG Yongfeng,QIU Ning,LU Zhicheng,et al.Shake table test on seismic performance of 1000 kV arrester and capacitor voltage transformer interconnected by tube bus[J].High Voltage Engineering,2014,40(12):3882-3887.
[16]张雪松,卢智成.软母线连接特高压电气设备的地震耦合效应[J].华南理工大学学报(自然科学版),2016,44(8):74-81.ZHANG Xuesong,LU Zhicheng.Seismic coupling effect of uhv electrical equipment with flexible bus connection[J].Journal of South China University of Technology(Natural Science Edition),2016,44(8):74-81.
[17]晏致涛,黄静文,李正良.基于结点6自由度的分裂导线有限元模型[J].工程力学,2012,29(8):325-332.YAN Zhitao,HUANG Jingwen,LI Zhengliang.Finite element model of bundle lines based on 6-dof node[J].Engineering Mechanics,2012,29(8):325-332.
[18]IEEE recommended practice for seismic design of substations:IEEE Std 693-2005[S].2016.
[19]建筑抗震设计规范:GB 50011-2010[S].2010.Code for seismic design of buildings:GB 50011-2010[S].2010.
[20]电力设施抗震设计规范:GB 50260-2013[S].2013.Code for design of seismic of electrical installtions:CB50260-2013[S].2013.